package cn.zhangxd.auth.config;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configurers.GlobalAuthenticationConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.token.store.JdbcTokenStore;

@Configuration
@EnableAuthorizationServer
public class OAuthConfiguration extends AuthorizationServerConfigurerAdapter
{
    @Autowired
    private AuthenticationManager auth;
    
    @Autowired
    private DataSource dataSource;
    
    private BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
    
    @Bean
    public JdbcTokenStore tokenStore()
    {
        return new JdbcTokenStore(dataSource);
    }
    
    @Override
    public void configure(AuthorizationServerSecurityConfigurer security)
        throws Exception
    {
        security.passwordEncoder(passwordEncoder);
    }
    
    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints)
        throws Exception
    {
        endpoints.authenticationManager(auth).tokenStore(tokenStore());
    }
    
    @Override
    public void configure(ClientDetailsServiceConfigurer clients)
        throws Exception
    {
        clients.jdbc(dataSource)
            .passwordEncoder(passwordEncoder)
            .withClient("client")
            .secret("secret")
            .authorizedGrantTypes("password", "refresh_token")
            .scopes("read", "write")
            .accessTokenValiditySeconds(3600) // 1 hour
            .refreshTokenValiditySeconds(2592000) // 30 days
            .and()
            .withClient("svca-service")
            .secret("password")
            .authorizedGrantTypes("client_credentials", "refresh_token")
            .scopes("server")
            .and()
            .withClient("svcb-service")
            .secret("password")
            .authorizedGrantTypes("client_credentials", "refresh_token")
            .scopes("server");
    }
    
    @Configuration
    @Order(-20)
    protected static class AuthenticationManagerConfiguration extends GlobalAuthenticationConfigurerAdapter
    {
        @Autowired
        private DataSource dataSource;
        
        @Override
        public void init(AuthenticationManagerBuilder auth)
            throws Exception
        {
            auth.jdbcAuthentication().dataSource(dataSource).withUser("dave").password("secret").roles("USER").and().withUser("anil").password("password").roles("ADMIN");
        }
    }
}